KR20100107194A - Digital broadcasting reception apparatus and its video data play method - Google Patents

Abstract

PURPOSE: A digital broadcasting transceiver and an image data reproduction method for converting the resolution of the received image data are provided to normally reproduce the image data by converting the resolution of the image data to the resolution of the digital broadcasting transceiver. CONSTITUTION: A communication module communicates with an external input device. A menu generator(114) generates a data information menu screen. A resolution controller(118) converts the resolution of the image data which is transmitted from the external device and converts the resolution of the image data into the specific resolution. A signal processing unit(112) displays the data information menu screen and reproduces the converted image data. A controller converts the resolution of the image data.

Description

Digital broadcasting receiver and video data reproduction method {DIGITAL BROADCASTING RECEPTION APPARATUS AND ITS VIDEO DATA PLAY METHOD}

The present invention relates to a technique for reproducing image data of a digital broadcast receiver, and more particularly, to a digital broadcast receiver and a method for reproducing image data transmitted from an external input device connected to the digital broadcast receiver. It is about.

As is well known, the characteristics of digital broadcasting are summarized as multichannel, high quality and multifunctional. Such digital broadcasting is able to bundle and transmit video, audio and data regardless of contents and size at the same time due to the development of multiplexing technology, and because the interactive service through a modem is possible, digital broadcasting has limited limitations of conventional analog data broadcasting. Beyond that, it can provide viewers with a higher level of multimedia services.

In addition, a broadcast signal provided in digital broadcasting includes additional information such as video information, audio information, and caption data. The additional information includes a table designed to operate in all TS (Transport Stream) for broadcasting programs and digital broadcasting. Contains program and system information protocol (PSIP) information that is a set. Here, the PSIP information may indicate electronic program guide (EPG) information and system information (SI) of the transmitted TS.

The purpose of this PSIP information is to describe the information of the virtual channel transmitted in a specific TS. The PSIP information includes a modulation scheme of each channel required for normal reception of each channel, a packet ID information for demultiplexing video and audio information from a packet stream carried on a carrier frequency and a carrier channel, and a program. Program guide information including title, broadcast time, brief content (summary of summary), caption service status, program grade, current time information, etc. are included.

By connecting various external input devices (for example, a PC, a notebook computer, a USB memory, etc.) to a digital broadcast receiving device which receives and reproduces such digital broadcasts, the image data from the external input device can be reproduced by the digital broadcast receiving device.

However, in case of reproducing image data from an external input device in the related art, when the resolution of the image data and the resolution of the digital broadcasting receiver are the same, normal reproduction may be performed, but the resolution of the image data is different from that of the digital broadcasting receiver. In the case of having a problem such as a screen cracking phenomenon, an unclear picture quality, and the like, there is a problem that normal playback cannot be performed.

Accordingly, according to the present invention, when the resolution of the image data transmitted from the external input device has a different resolution from that of the digital broadcast receiver, the image data is normally converted by converting the resolution of the image data to a preset resolution corresponding to the digital broadcast receiver. The present invention provides a digital broadcast receiving apparatus capable of reproducing and a method of reproducing image data thereof.

In one aspect, the present invention provides a communication module for performing data communication with an external input device, a menu generation unit for generating a data information menu screen for displaying data information from the external input device, and the external input device. A resolution adjusting unit for forcibly converting the resolution of the image data transmitted from the camera to a preset resolution, a signal processor for displaying the data information menu screen and reproducing the image data forcibly converted to the preset resolution, and the data information And a controller for controlling generation and display of a menu screen, comparing the resolution of the image data with the preset resolution, and forcibly converting and reproducing the resolution of the image data to the preset resolution if they are not the same. A digital broadcast receiving apparatus is provided.

In another aspect, the present invention provides a method of displaying data information transmitted from an external input device when the external input device is connected, receiving specific image data from the external input device when specific data is selected from the displayed data information; Checking whether the resolution of the received image data is the same as a preset resolution; if the result is not the same, forcibly converting the resolution of the image data to the preset resolution; and forcing the preset resolution to the preset resolution. The present invention provides a method of reproducing image data of a digital broadcasting receiver, comprising reproducing the converted image data.

According to the present invention, unlike the conventional method of reproducing image data transmitted from an external input device according to its resolution, the digital broadcast receiving apparatus sets the resolution of the image data when the resolution of the image data is not the same as the preset resolution. By forcibly converting to a resolution and reproducing the image data suitable for the digital broadcast receiving apparatus, the image data of normal image quality can be reproduced, thereby improving the image data reproduction performance.

According to the present invention, when an external input device is connected to a digital broadcast receiving device, the data information of the image data in the external input device is displayed, and if specific data is selected therein, after receiving the data, the resolution and the resolution of the data are displayed. Comparing the set resolution, and if the resolution is not the same, forcibly converts to the preset resolution to reproduce the image data, through the technical means can solve the problems in the prior art.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a digital broadcast receiver suitable for converting and reproducing a resolution of image data input from an external device according to an embodiment of the present invention. The key input unit 102, the controller 104, It includes a tuning and demodulation unit 106, a demultiplexer 108, a decoder 110, a signal processor 112, a menu generator 114, a communication module 116, a resolution controller 118, etc. can do.

Referring to FIG. 1, the key input unit 102 generates an operation signal for controlling the operation of a broadcast receiving apparatus, including, for example, a remote controller, and the like. When a key for selecting specific image data is input from data information from an external input device (for example, a PC, a notebook computer, a USB memory, etc.) by using a key or the like, the control unit 104 provides a selection operation signal corresponding thereto. And so on.

In addition, the control unit 104 performs an overall operation control of the broadcast receiving apparatus, including, for example, a microprocessor, and provides the digital broadcasting channel tuning control signal to the tuning and demodulation unit 106 for such operation control. And a control signal for separating the demodulated broadcast stream into video and audio signals and additional information to the demultiplexer 108, and a control signal for decoding the video and audio signals to the decoding unit 110. The control signal for reproducing the decoded video and audio signals is provided to the signal processor 112, and the additional information transmitted from the demultiplexer 108 is stored in a storage medium (for example, a memory or a hard disk drive). Functions such as saving.

In addition, when the external input device is connected, the controller 104 receives data information (eg, data name, data size, data type, resolution size, etc.) of the external input device through the communication module unit 116. In addition, a control signal for displaying such data information is provided to the menu generating unit 114 and the signal processing unit 112. When a selection operation signal corresponding to the selection of specific image data is input from the key input unit 102, the corresponding image data. Requests to the external input device through the communication module 116 to extract and transmit.

When the corresponding video data is received from the external input device through the communication module unit 116, the controller 104 compares the resolution of the corresponding video data with a preset resolution corresponding to the digital broadcasting receiver, and then the resolution is If the resolution is the same, and if the resolution is the same, a control signal for reproducing the corresponding video data is provided to the signal processing unit 112. If the resolution is not the same, the resolution of the corresponding video data is converted to the preset resolution. The control signal is provided to the resolution adjusting unit 118, and the control signal for reproducing the image data converted to the preset resolution is provided to the signal processing unit 112.

Next, when the tuning control signal is provided from the control unit 104, the tuning and demodulation unit 106 tunes any one of a plurality of broadcast channels received through the antenna in response thereto. After the conversion to the intermediate frequency, demodulation and error correction process to restore the transport stream to the demultiplexer 108.

The demultiplexer 108 extracts the video and audio signals of the digital broadcast program that the user watches from the reconstructed transport stream and delivers them to the decoding unit 110, and the additional information (i.e., PSIP) inserted on the transport stream. Information, etc.) packet data is extracted and transmitted to the control unit 104.

Meanwhile, the decoding unit 110 converts the compressed coded broadcast signal (broadcast program signal) of a specific channel into an original signal before encoding using a decoding technique such as variable length decoding, inverse DCT, inverse quantization, and motion compensation. The signal is returned to the signal processor 112.

Next, the signal processor 112 receives the digital broadcast signal restored by the decoder 110 to display a video signal through a monitor (not shown), output an audio signal through a speaker not shown, and generate a menu. Various menu screens (for example, data information menu screens, etc.) generated through 114 are mixed (combined) with video signals and displayed on a monitor.

In addition, the signal processing unit 112 reproduces the image data converted from the resolution transferred from the resolution adjusting unit 118 through a monitor (not shown).

Meanwhile, the menu generator 114 generates various menu screens (for example, an electronic program guide menu screen and a data information menu screen) according to a control signal from the controller 104 when a user requests broadcast program related information. The menu screen data generated here is transferred to the signal processor 112.

In addition, the communication module unit 116 includes a USB port, and is responsible for the connection between the external input device and the digital broadcast receiving device, thereby transmitting various data (for example, data information transmission, image data transmission request, Video data transmission, etc.).

Next, the resolution adjusting unit 118 includes an image scaler and the like, forcibly converts the resolution of the image data transmitted according to the control signal from the control unit 104 to a preset resolution, and converts the resolution of the image data. To the signal processor 112. For example, when the image data resolution from an external input device has a resolution of 1024 × 768 and the preset resolution corresponding to the broadcast receiving device has a resolution of 640 × 480, the resolution of 1024 × 768 is 640 × 480. After coercion to, the image data having a resolution of 640 × 480 may be transmitted to the signal processor 112.

Next, when the external input device is connected to the digital broadcast receiving device having the above-described configuration, the data information of the video data in the external input device is displayed, and if specific data is selected among them, after receiving the corresponding data, A process of reproducing image data by comparing the resolution of the corresponding data with a preset resolution and forcibly converting to a preset resolution when the resolution is not the same will be described.

FIG. 2 is a flowchart illustrating a process of converting and reproducing a resolution of image data input from the outside to a preset resolution according to an embodiment of the present invention.

Referring to FIG. 2, in the standby mode of the digital broadcast receiver (step 202), the controller 104 connects an external input device (eg, a PC, a notebook computer, a USB memory, etc.) through the communication module unit 116. Check if it is (step 204).

As a result of the check in the step 204, when the external input device is connected, the control unit 104 requests the transmission of data information to the external input device connected through the communication module unit 116, accordingly corresponding external input Data information (for example, data name, data size, data type, resolution size, etc.) transmitted from the device is received through the communication module unit 116, and a control signal for displaying such data information is generated by the menu generating unit ( 114) and the data information menu screen generated accordingly, through a monitor (not shown) (step 206).

In addition, when the user selects specific image data from the displayed data information using an input unit (not shown), for example, a remote controller, a selection operation signal according to the selection of specific image data from the key input unit 102 is performed. Check if it is entered (step 208).

As a result of the check in the step 208, when a selection operation signal corresponding to the selection of the specific image data is input, the controller 104 requests the external input device to extract and transmit the corresponding image data through the communication module unit 116. In operation 210, the external input device 116 extracts and transmits the corresponding image data.

Next, when the corresponding video data is received from the external input device through the communication module unit 116, the controller 104 compares the resolution of the corresponding video data with a preset resolution corresponding to the digital broadcast receiving apparatus (step 212). .

As a result of the comparison, the controller 104 checks whether or not the resolution of the corresponding video data is the same as the preset resolution corresponding to the digital broadcast receiver (step 214).

If the resolution of the image data and the preset resolution is not the same as the result of the check in step 214, the control unit 104 converts a control signal for converting the resolution of the corresponding image data into the preset resolution unit 118 In this case, the resolution adjusting unit 118 coerces the resolution of the corresponding image data to a preset resolution (step 216). For example, when the image data resolution from an external input device has a resolution of 1024 × 768 and the preset resolution corresponding to the broadcast receiving device has a resolution of 640 × 480, the resolution of 1024 × 768 is 640 × 480. After conversion to, image data having a resolution of 640 × 480 may be transmitted to the signal processor 112.

Next, the control unit 104 provides a control signal for reproducing the image data converted to the preset resolution to the signal processing unit 112. Accordingly, the signal processing unit 112 monitors and outputs the image data, not shown. Play through (step 218).

On the other hand, if the resolution of the image data and the preset resolution is the same as the result of the check in step 214, the control unit 104 provides a control signal for reproducing the image data to the signal processing unit 112, accordingly the signal The processor 112 reproduces the video data through a monitor and a speaker (not shown) (step 220).

Therefore, when the resolution of the image data transmitted from the external input device is not the same as the preset resolution in the digital broadcasting receiver, the video data reproduction performance may be improved by forcibly converting and reproducing the resolution of the image data to the preset resolution. .

In the foregoing description, various embodiments of the present invention have been described and described. However, the present invention is not necessarily limited thereto, and a person having ordinary skill in the art to which the present invention pertains can make various changes without departing from the technical spirit of the present invention. It will be readily appreciated that branch substitutions, modifications and variations are possible.

1 is a block diagram illustrating a digital broadcast receiver suitable for converting and reproducing a resolution of image data input from an external device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a process of converting and reproducing a resolution of image data input from the outside to a preset resolution according to an embodiment of the present invention; FIG.

<Description of the symbols for the main parts of the drawings>

102: key input unit 104: control unit

106: tuning and demodulation unit 108: demultiplexer

110: decoding unit 112: signal processing unit

114: menu generation unit 116: communication module unit

118: resolution control unit

Claims (7)

A communication module unit responsible for data communication with an external input device, A menu generator for generating a data information menu screen for displaying data information from the external input device; A resolution adjusting unit for forcibly converting the resolution of the image data transmitted from the external input device to a preset resolution; A signal processor for displaying the data information menu screen and reproducing the image data forcibly converted to the preset resolution; Controlling the generation and display of the data information menu screen, comparing the resolution of the image data with the preset resolution, and if not the same, forcibly converting the resolution of the image data to the preset resolution and playing the same; Control Digital broadcast receiving device comprising a. The method of claim 1, And the controller controls to reproduce the resolution of the image data when the resolution of the image data and the preset resolution are the same. The method of claim 2, The external input device is any one of a PC, a notebook computer, and a USB memory. The method of claim 2, And the data information includes a data name, a data size, a data type, and a resolution size. When the external input device is connected, displaying data information transmitted therefrom; Receiving specific image data from the external input device when specific data is selected from the displayed data information; Checking whether the resolution of the received image data is the same as a preset resolution; Forcibly converting the resolution of the image data to the preset resolution if it is not the same as the check result; Reproducing the image data forcibly converted to the preset resolution Image data reproduction method of a digital broadcast receiving device comprising a. The method of claim 5, The external input device may be any one of a PC, a notebook computer, and a USB memory. The method of claim 5, And the data information includes a data name, a data size, a data type, and a resolution size.

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